65705472 has 240 divisors, whose sum is σ = 228579120. Its totient is φ = 18579456.

The previous prime is 65705443. The next prime is 65705489. The reversal of 65705472 is 27450756.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 677328 + ... + 677424.

It is an arithmetic number, because the mean of its divisors is an integer number (952413).

Almost surely, 2^65705472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65705472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114289560).

65705472 is an abundant number, since it is smaller than the sum of its proper divisors (162873648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65705472 is an equidigital number, since it uses as much as digits as its factorization.

65705472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 65705472 is about 8105.8911909796. The cubic root of 65705472 is about 403.5219650568.

The spelling of 65705472 in words is "sixty-five million, seven hundred five thousand, four hundred seventy-two".